In a medium pot, bring the water, vinegar, and salt to a boil. Boil for 5 to 10 minutes. Remove from heat and allow to cool slightly.
Warm the quart jars by filling with hot water and then remove the water.
Remove air bubbles from the jar.
Wipe the rims of the jars and attach the lids and bands.
Settle the jars in a standing position in a large stockpot or canner. Cover completely with water. Put the stockpot over medium heat and bring to a boil. Cook the jars for 15 minutes.
Remove jars from the stockpot and place on a towel to cool completely before storing. The lids may pop as the jars cool.
If the lids do not seal completely, place the jars in the refrigerator and eat within one week.